# Buy Hex bolt Grade 5 at Autoservice ## Hex bolt Grade 5 electroplated zinc UNC 1/2x3.1/2 Fasteners / Bolts / Bolts not metric Strong hex bolt with UNC 1/2"-13 thread, ideal for robust connections in automotive applications. ## Prices and stock - **SIN-BL-BNC12-312**: € 5,02 incl. VAT — backorder ## Order URL [Hex bolt Grade 5 electroplated zinc UNC 1/2x3.1/2](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-12x312-1st) ## Alternate URLs - **nl**: [Hex bolt Grade 5 electroplated zinc UNC 1/2x3.1/2](https://www.auto-service.be/nl/bevestigingsmateriaal/bouten/bouten-niet-metrisch/zeskantbout-grade-5-electrolitisch-verzinkt-unc-12x312-1st) - **fr**: [Hex bolt Grade 5 electroplated zinc UNC 1/2x3.1/2](https://www.auto-service.be/fr/materiel-de-fixation/boulons/boulons-non-metriques/grade-5-boulon-electrozingue-unc-12x312-1pc) - **en**: [Hex bolt Grade 5 electroplated zinc UNC 1/2x3.1/2](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-12x312-1st) ## Images - ![Product image](https://www.auto-service.be/assets/media/7892/conversions/zeskantbout-grade-5-electrolitisch-verzinkt-unc-12x312-1st-9168-optimized.jpg) ## Specifications - **Reference**: SIN-BL-BNC12-312 ## Product description ### Robust hex bolt for reliable connections This hex bolt is made from Grade 5 steel, which corresponds to strength class 8.8. This makes the bolt suitable for applications requiring high tensile strength, such as in the automotive sector. The electroplated zinc finish provides excellent protection against corrosion, ensuring the bolt remains reliable even in humid or corrosive environments. ### Specifications - **Diameter:** 1/2 inch (12.7 mm) - **Length:** 3.1/2 inch (88.9 mm) - **Thread type:** Unified National Coarse (UNC) with 13 threads per inch - **Wrench size:** 3/4 inch (19.05 mm) - **Head height:** 0.3125 inch (7.94 mm) ### Applications in the automotive sector This hex bolt is ideal for various applications in the automotive sector, including: - Fastening engine components - Mounting chassis parts - Installing suspension systems Thanks to its high strength and corrosion resistance, this bolt is a reliable choice for critical connections in cars. ### Compatibility with nuts For optimal connection, it is recommended to combine this hex bolt with a matching electroplated hex nut with UNC 1/2"-13 thread and Grade 5 strength class. This ensures consistent strength and corrosion resistance in the connection. ### Standards and quality assurance This hex bolt complies with the ASME B18.2.1 standard and is manufactured according to SAE J429 specifications for Grade 5 bolts. This guarantees high quality and reliability for your applications. ### Benefits at a glance - High tensile strength thanks to Grade 5 steel - Corrosion resistant due to electroplated zinc - Suitable for various automotive applications - Complies with international standards for quality and reliability ## Breadcrumbs - [Fasteners](https://www.auto-service.be/en/fasteners) - [Bolts](https://www.auto-service.be/en/fasteners/bolts) - [Bolts not metric](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric) ## Related products - [Hex bolt Grade 5 electroplated UNC 1/4x3.1/2 (5 pieces)](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-14x312-5pcs) - [Hex bolt Grade 5 electroplated UNC 3/4x3.1/2](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-34x312-1st) - [Hex bolt Grade 5 electroplated zinc UNC 5/8x2.1/4](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-58x214-1st) - 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